Car Craft
Click here to find out more!

Building a 1976 buick 455

  
Car Craft
1 |  2 |  Next   | Last 
Item Posts    Sort Order

Building a 1976 buick 455

 
Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/01/13
06:27 PM

I'm building a buick 455 and want to know thing I might need to get more horsepower out of it. I have never had a buick engine. I am putting it in a 1986 cutlass. I'm taking a 307 out of it. I have a th350 trans but I bought a th400 trans to go behind it. I need different thoughts on what I should do. In really at a stand still right now. Can anyone please help me out.  

68scott385 68scott385
Enthusiast | Posts: 669 | Joined: 05/09
Posted: 05/01/13
11:08 PM

You need to contact user name The Silver Buick. He has built a few Buick 455s, installed aftermarket EFI, and runs a 4 or 5 speed manual trans. He has a thread in a different forum that follows his build(s). I'll see if I can post a link.  
68scott385 68scott385 68scott385

68scott385 68scott385
Enthusiast | Posts: 669 | Joined: 05/09
Posted: 05/01/13
11:15 PM

http://www.bangshift.com/forum/showthread.php/5437-The-Silver-Buick-s-well-Silver-Buick!?s=42bb4bc140b6d625aa59a400fec7bf8e  
68scott385 68scott385 68scott385

TheSilverBuick TheSilverBuick
Guru | Posts: 1220 | Joined: 02/06
Posted: 05/02/13
07:16 AM

The two things I need to know (goes for all engines) is what is your actual budget and what are your horsepower goals?

Basic stuff is aluminum heads are nice, though $$ '70 heads are best for compression, '71-'73 heads next best. Completely avoid the '75-'76 heads and I'm not sure on the '74.  Big valves (Stage 1) only really help if you unshroud the valves in the chamber and open up the bowls behind the valve, if you aren't going to do both, stick with the standard valves.

Get the 10:1 pistons, I highly recommend getting forged ones.  Though 10:1, my compression was 9.6:1 with '70 heads, a felpro gasket and the piston .030" in the hole.  

Headers are also $$ and I don't know what fits the G-body, but this also depends on your HP goals and budget.  
-
The Silver Buick- '77 Skylark coupe w/ a Fuel Injected Buick 455&TKO-600, '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428&C6. '69 Firebird replaced!

http://www.bangshift.com/forum/index.php?topic=6189.0

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/02/13
09:30 AM

I want to get about 500 horses out of it. I want to spend about 3000 in the motor. Is a th400 a good trans to go behind it. Where can I find some '70 heads. Buicks parts are hard to find. I been looking on the web and I hardly can find what I'm looking for.  

TheSilverBuick TheSilverBuick
Guru | Posts: 1220 | Joined: 02/06
Posted: 05/02/13
11:16 AM

E-bay, TA Performance(.com) and V8Buick.com forum are where to look for parts.  500HP on $3,000 is a tall order for a BBB, 400-450HP and a ton of torque is much easier to achieve.  Machine work alone will run you ~$1200 minimum on top of buying heads, etc. I guess a good follow up question would be, what heads do you already have? If they are the '71-'73 vintage you should do fine on compression with a zero decked block.  I'm pretty sure with the right cam you could probably get around 400HP out of stock exhaust manifolds, which would save a pile of dollars on headers unless you are able to build your own.

On cam selection, watch for too much spring pressure that would crack the lifter bore. Staying around the .500" lift mark would be good.  The Comp 268H cam is popular, and I like the TA Performance 290H cam.  Either of those should put you in the 400HP range without headers.  Any kind of porting around the valves and behind the valve that you can do on the iron heads will help out. I wouldn't mess with the ports themselves other than clean up smoothing.  People are running 10's in the 1/4 mile with small valve heads with clean up work behind the valves and a bit around the valves, so don't think the big valves are absolute requirements given the budget.

The factory iron intake is actually a decent piece, the aluminum performer, etc intakes mostly just save weight.  An SP1 or SPX single plane will help top end HP, but plenty of people have made 500+HP with a dual plane performer (and ported or aluminum heads, full headers and decent sized cam).  Be sure to order the intake gasket that will match the year of the heads, that's important for the exhaust cross over.  

Q-jets are good carburetors. If you don't like them get at least an 800cfm carb as Buick's tend to like their air compared to similar displacement engines of other makes. I think it's due to the tall and narrow ports having high air velocity.

You'll probably read a lot about oil system modifications.  Most are overkill IMO for anything other than all out racing or regular runs over 6,000 rpm.  If you have a '71 or newer engine block, then you'll have the bigger oil pickup tube, if you have a '70 or older block, then I'd recommend at least drilling out the oil pick up to the next size up (I'd have to look up the exact sizes).  
-
The Silver Buick- '77 Skylark coupe w/ a Fuel Injected Buick 455&TKO-600, '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428&C6. '69 Firebird replaced!

http://www.bangshift.com/forum/index.php?topic=6189.0

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/02/13
03:26 PM

Is there anything I could do to the stock '76 heads or will it be a waste of time. I guess my '76 455 is the worse of the 455s huh.  

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/04/13
12:29 PM

Ok thanks for the help  

TheSilverBuick TheSilverBuick
Guru | Posts: 1220 | Joined: 02/06
Posted: 05/07/13
06:44 AM

Nothing will make the '75-'76 heads any good. Too much milling required to bring up the compression enough to make it worth it. By the time the milling is done you'd need adapters to make an intake manifold bolt to them.  
-
The Silver Buick- '77 Skylark coupe w/ a Fuel Injected Buick 455&TKO-600, '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428&C6. '69 Firebird replaced!

http://www.bangshift.com/forum/index.php?topic=6189.0

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/20/13
03:51 PM

Thanks for the help on the buick. I have Finish my buick project  

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/20/13
03:55 PM

I have a 1977 ltd I just bought. I don't know what size engine in it.  It says a 351W "C". I believe it's a 351 windsor but what do the C stands for. I have been researching it but I don't get a direct answer. Can anyone please help.  

TheSilverBuick TheSilverBuick
Guru | Posts: 1220 | Joined: 02/06
Posted: 05/21/13
10:30 AM

Probably the engine vin letter, aka "smog engine C" for testing.  
-
The Silver Buick- '77 Skylark coupe w/ a Fuel Injected Buick 455&TKO-600, '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428&C6. '69 Firebird replaced!

http://www.bangshift.com/forum/index.php?topic=6189.0

Finleyboy Finleyboy
New User | Posts: 10 | Joined: 04/13
Posted: 05/21/13
12:27 PM

Thanks  

waynep712222 waynep712222
User | Posts: 103 | Joined: 03/13
Posted: 05/22/13
08:39 AM

1977 Ford LTD:
Available engines
8 Cylinders A 7.5L 4BL OHV (found in 05% of 1977 Ford LTD)
8 Cylinders C 7.5L 4BL HP (found in 01% of 1977 Ford LTD)
8 Cylinders F 5.0L 2BL (found in 04% of 1977 Ford LTD)
8 Cylinders H 5.8L 2BL Windsor OHV (found in 05% of 1977 Ford LTD)
8 Cylinders H 5.8L 2BLModified OHV (found in 33% of 1977 Ford LTD)
8 Cylinders S 6.6L 2BL OHV (found in 52% of 1977 Ford LTD)

to tell the quick difference between the windsor and the Modified versions..

windsor motors have horizontal fuel pump mounting bolts...  like at the ends of first letter in the name Windsor

cleveland and modified motors have fuel pump bolts in a vertical pattern.. like the ends of the first letter in Cleveland


this is a 351M fuel pump.. see the bolt pattern..


if you have a 351M or a 400M..  there are a few articles on build ups on those spread out in the 40 or so magazines on this site..  

TheSilverBuick TheSilverBuick
Guru | Posts: 1220 | Joined: 02/06
Posted: 05/22/13
10:02 AM

A "C" code would imply 460.  Interesting that the Winsor and Modified use the same "H" code and that the 400M was the most popular engine option.  
-
The Silver Buick- '77 Skylark coupe w/ a Fuel Injected Buick 455&TKO-600, '72 Centurion Conv't - 455w/TH400, '67 T-bird 4Dr (suicide) w/428&C6. '69 Firebird replaced!

http://www.bangshift.com/forum/index.php?topic=6189.0

1 |  2 |  Next   | Last